The Rane HC 6 is one of the most indispensable products in today's audio industry. Featuring six stereo headphone amplifiers, the HC 6 performs a number of necessary tasks, not all of which are headphone related. The HC 6 provides Master stereo 1/4 TRS Inputs which can drive any or all of the 6 stereo headphone amplifiers. A Mono switch is provided on the front panel to drive both channels of all six amplifiers from a common mono source. Six individual unbalanced stereo Inputs are available to drive any individual amplifier from a separate stereo source. These Inputs can be converted to mono balanced Inputs through internal jumpers if required. Outputs for all six channels are provided on the front panel and on the rear panel so that headphones may be connected on either side based on the requirements of a given installation. Two pairs of headphones may be driven from each channel, one pair connected to the front and one to the rear. The HC 6 is capable of delivering up to 450 milliwatts per channel into headphones with rated impedances between 32-600 ohms. The precise amount of power depends on the exact impedance of the headphone in use and the number of headphones connected to the unit. Under most conditions, the HC 6 produces sound pressure levels in excess of 120 dB. This level is above the threshold of pain and is suitable for most listeners.